okd/roles/openshift_node/tasks/storage_plugins/nfs.yml

---
- name: Install NFS storage plugin dependencies
  package:
    name: nfs-utils
    state: present
  register: result
  until: result is succeeded

- name: Check for existence of nfs sebooleans
  command: getsebool {{ item }}
  register: nfs_getsebool_status
  when:
  - ansible_selinux
  - ansible_selinux.status == "enabled"
  failed_when: false
  changed_when: false
  with_items:
  - virt_use_nfs
  - virt_sandbox_use_nfs

- name: Set seboolean to allow nfs storage plugin access from containers
  seboolean:
    name: "{{ item.item }}"
    state: yes
    persistent: yes
  when:
  - ansible_selinux
  - ansible_selinux.status == "enabled"
  - item.rc == 0
  # We need to detect whether or not the boolean is an alias, since `seboolean`
  # will error if it is an alias.  We do this by inspecting stdout for the boolean name,
  # since getsebool prints the resolved name.  (At some point Ansible's seboolean module
  # should learn to deal with aliases)
  - item.item in item.stdout  # Boolean does not have an alias.
  - ansible_python_version is version('3', '<')
  with_items: "{{ nfs_getsebool_status.results }}"

# Workaround for https://github.com/openshift/openshift-ansible/issues/4438
# Use command module rather than seboolean module to set NFS booleans.
# TODO: Remove this task and the ansible_python_version comparison in
# the previous task when the problem has been addressed in current
# ansible release.
- name: Set seboolean to allow nfs storage plugin access from containers (python 3)
  command: setsebool -P {{ item.item }} on
  when:
  - ansible_selinux
  - ansible_selinux.status == "enabled"
  - item.rc == 0
  # We need to detect whether or not the boolean is an alias, since `seboolean`
  # will error if it is an alias.  We do this by inspecting stdout for the boolean name,
  # since getsebool prints the resolved name.  (At some point Ansible's seboolean module
  # should learn to deal with aliases)
  - item.item in item.stdout  # Boolean does not have an alias.
  - ('--> off' in item.stdout)  # Boolean is currently off.
  - ansible_python_version is version('3', '>=')
  with_items: "{{ nfs_getsebool_status.results }}"